Is Plague Nurse legal in Standard, Modern, and Commander?

Plague Nurse is legal in: Modern, Pioneer, Legacy, Vintage, Commander, Pauper, Historic.

Plague Nurse

Q: What type of card is Plague Nurse?

Plague Nurse is a Creature — Phyrexian Cleric. Its oracle text reads: "Toxic 2 {2}{G}: Each other creature you control with toxic gains toxic 1 until end of turn. Activate only once each turn. (A player dealt combat damage by a creature with toxic also gets poison counters equal to that creature's total toxic value.)"

Creature — Phyrexian Cleric

Toxic 2

: Each other creature you control with toxic gains toxic 1 until end of turn. Activate only once each turn. (A player dealt combat damage by a creature with toxic also gets poison counters equal to that creature's total toxic value.)